US20220413230A1 - Flexible optical fiber connectors and assemblies - Google Patents
Flexible optical fiber connectors and assemblies Download PDFInfo
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- US20220413230A1 US20220413230A1 US17/822,774 US202217822774A US2022413230A1 US 20220413230 A1 US20220413230 A1 US 20220413230A1 US 202217822774 A US202217822774 A US 202217822774A US 2022413230 A1 US2022413230 A1 US 2022413230A1
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- 230000000712 assembly Effects 0.000 title description 6
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- 238000002788 crimping Methods 0.000 claims 1
- 239000000835 fiber Substances 0.000 description 9
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- 230000003287 optical effect Effects 0.000 description 2
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Images
Classifications
-
- G—PHYSICS
- G02—OPTICS
- G02B—OPTICAL ELEMENTS, SYSTEMS OR APPARATUS
- G02B6/00—Light guides; Structural details of arrangements comprising light guides and other optical elements, e.g. couplings
- G02B6/24—Coupling light guides
- G02B6/36—Mechanical coupling means
- G02B6/38—Mechanical coupling means having fibre to fibre mating means
- G02B6/3807—Dismountable connectors, i.e. comprising plugs
- G02B6/389—Dismountable connectors, i.e. comprising plugs characterised by the method of fastening connecting plugs and sockets, e.g. screw- or nut-lock, snap-in, bayonet type
- G02B6/3893—Push-pull type, e.g. snap-in, push-on
-
- G—PHYSICS
- G02—OPTICS
- G02B—OPTICAL ELEMENTS, SYSTEMS OR APPARATUS
- G02B6/00—Light guides; Structural details of arrangements comprising light guides and other optical elements, e.g. couplings
- G02B6/24—Coupling light guides
- G02B6/36—Mechanical coupling means
- G02B6/38—Mechanical coupling means having fibre to fibre mating means
- G02B6/3807—Dismountable connectors, i.e. comprising plugs
- G02B6/381—Dismountable connectors, i.e. comprising plugs of the ferrule type, e.g. fibre ends embedded in ferrules, connecting a pair of fibres
- G02B6/3825—Dismountable connectors, i.e. comprising plugs of the ferrule type, e.g. fibre ends embedded in ferrules, connecting a pair of fibres with an intermediate part, e.g. adapter, receptacle, linking two plugs
-
- G—PHYSICS
- G02—OPTICS
- G02B—OPTICAL ELEMENTS, SYSTEMS OR APPARATUS
- G02B6/00—Light guides; Structural details of arrangements comprising light guides and other optical elements, e.g. couplings
- G02B6/24—Coupling light guides
- G02B6/36—Mechanical coupling means
- G02B6/38—Mechanical coupling means having fibre to fibre mating means
- G02B6/3807—Dismountable connectors, i.e. comprising plugs
- G02B6/381—Dismountable connectors, i.e. comprising plugs of the ferrule type, e.g. fibre ends embedded in ferrules, connecting a pair of fibres
- G02B6/3826—Dismountable connectors, i.e. comprising plugs of the ferrule type, e.g. fibre ends embedded in ferrules, connecting a pair of fibres characterised by form or shape
- G02B6/3831—Dismountable connectors, i.e. comprising plugs of the ferrule type, e.g. fibre ends embedded in ferrules, connecting a pair of fibres characterised by form or shape comprising a keying element on the plug or adapter, e.g. to forbid wrong connection
-
- G—PHYSICS
- G02—OPTICS
- G02B—OPTICAL ELEMENTS, SYSTEMS OR APPARATUS
- G02B6/00—Light guides; Structural details of arrangements comprising light guides and other optical elements, e.g. couplings
- G02B6/24—Coupling light guides
- G02B6/36—Mechanical coupling means
- G02B6/38—Mechanical coupling means having fibre to fibre mating means
- G02B6/3807—Dismountable connectors, i.e. comprising plugs
- G02B6/3897—Connectors fixed to housings, casing, frames or circuit boards
-
- G—PHYSICS
- G02—OPTICS
- G02B—OPTICAL ELEMENTS, SYSTEMS OR APPARATUS
- G02B6/00—Light guides; Structural details of arrangements comprising light guides and other optical elements, e.g. couplings
- G02B6/44—Mechanical structures for providing tensile strength and external protection for fibres, e.g. optical transmission cables
- G02B6/4439—Auxiliary devices
- G02B6/444—Systems or boxes with surplus lengths
- G02B6/4441—Boxes
- G02B6/445—Boxes with lateral pivoting cover
-
- G—PHYSICS
- G02—OPTICS
- G02B—OPTICAL ELEMENTS, SYSTEMS OR APPARATUS
- G02B6/00—Light guides; Structural details of arrangements comprising light guides and other optical elements, e.g. couplings
- G02B6/46—Processes or apparatus adapted for installing or repairing optical fibres or optical cables
- G02B6/48—Overhead installation
- G02B6/483—Installation of aerial type
Definitions
- the present disclosure relates generally to optical fiber communications, and more specifically to optical fiber connectors and assemblies.
- each individual fiber is generally connected to both a source and a destination device. Additionally, along the fiber optic run between the source and the destination, various connections or couplings may be made on the optical fiber to adjust the length of the fiber or to provide termination connection ports for end users at which one or more fibers may be branched from a feed cable. In instances when the connection may be exposed to weather conditions, an essentially waterproof configuration of components is needed.
- Some example connectors may include, but are not limited to, SC, Dual LC, LC, ST and MPO connectors.
- ferrules one in each connector, or one in the connector and one in the apparatus or device, each containing an optical fiber end, are butted together end to end and light travels across the junction.
- FTTP fiber to the premises
- FTTH fiber to the home
- a flexible optical fiber connector comprising a first housing component configured to couple to a terminating connector, a second housing component configured to receive an optical fiber for termination in the terminating connector.
- the first housing component and the second housing component are further configured to receive a pushable connector therethrough.
- the terminating connector may comprise a back post.
- the back post may be configured to receive a spring and a ferrule.
- the terminating connector may be an SC connector.
- the first housing component may comprise a first prong and a second prong separated by a slit, each of the first prong and the second prong having a double-D hole and a flat configured to accommodate coupling the first housing component to the terminating connector.
- the flexible optical fiber connector may further comprise a key configured to prevent rotation of the flexible optical fiber connector within a port.
- a flexible optical fiber connector assembly comprising a flexible connector having a housing configured to receive an optical fiber, and a terminating connector comprising a back post and a ferrule configured to receive the optical fiber.
- the flexible connector may be configured to couple to the terminating connector.
- the terminating connector may further comprise an outer housing.
- the flexible optical fiber connector assembly may further comprise a crimp ring disposed between the flexible connector and the outer housing to prevent rotation of the terminating connector relative to the flexible connector.
- the outer housing may comprise a key configured to prevent rotation of the optical fiber connector assembly.
- the terminating connector may be configured to decouple from the flexible connector to allow the flexible connector to receive a pushable connector therethrough in lieu of the terminating connector.
- a terminal comprising a port base comprising a plurality of ports. At least one port of the plurality of ports may be configured to receive a flexible connector.
- the flexible connector may be configured to receive a pushable connector.
- the flexible connector may also be configured to couple to a terminating connector.
- the at least one port may be further configured to receive a holder for holding an adapter configured to receive the terminating connector.
- the port base may be further configured to receive a plate configured to couple to the port base to secure the holder for holding the adapter to the at least one port.
- the flexible connector may comprise a first housing component configured to couple to the terminating connector, and a second housing component configured to receive an optical fiber for termination in the terminating connector.
- the first housing component may comprise a first prong and a second prong separated by a slit, each of the first prong and the second prong having a double-D hole and a flat configured to accommodate coupling the first housing component to the terminating connector.
- the terminating connector may comprise a back post configured to couple to the first housing component, a spring, and a ferrule for terminating the optical fiber. The back post may be further configured to receive the spring and the ferrule.
- the terminating connector may further comprise an internal housing for housing the ferrule and an outer housing.
- the holder may comprise a base portion configured to couple to the at least one port, and an adapter holding portion configured to hold the adapter.
- the holder may be a single integral piece.
- the at least one port may be configured to receive a plurality of different holders, each holder of the plurality of different holders being configured to hold a different adapter for coupling to a different terminating connector.
- the at least one port may be a flexible port comprising a seal, a press-in element, and a clip.
- FIG. 1 A is a perspective view of one embodiment of a terminal
- FIG. 1 B is a perspective view of the terminal of FIG. 1 A , further showing incoming cables and connectors;
- FIG. 2 is a perspective view of one embodiment of a flexible port (FlexPort) configured to receive embodiments of connectors according to aspects of the present disclosure
- FIG. 3 is a perspective view of one embodiment of a flexible connector (FlexConnector) for receiving a pushable connector;
- FIG. 4 is a perspective view of the flexible connector of FIG. 3 with a pushable connector therethrough;
- FIG. 5 is a perspective view of one embodiment of a flexible connector configured according to aspects of the present disclosure
- FIG. 6 is an exploded view of a flexible connector assembly configured according to aspects of the present disclosure
- FIG. 7 is a perspective view of one embodiment of an SC back post configured according to aspects of the present disclosure.
- FIG. 8 is an assembled perspective view of the flexible connector assembly of FIG. 6 according to aspects of the present disclosure.
- FIG. 9 is a perspective view of the flexible connector assembly of FIG. 8 further comprising a housing according to aspects of the present disclosure
- FIG. 10 is a perspective view of the flexible connector assembly of FIG. 9 further comprising an outer housing according to aspects of the present disclosure
- FIG. 11 is a perspective view of the flexible connector assembly of FIG. 10 , further illustrating the outer housing according to aspects of the present disclosure
- FIG. 12 is a perspective view of another embodiment of a flexible connector having a protrusion configured to receive a crimp ring according to aspects of the present disclosure
- FIG. 13 is an exploded perspective view of a flexible connector assembly having a crimp ring according to aspects of the present disclosure
- FIG. 14 is an assembled perspective view of the flexible connector assembly of FIG. 13 according to aspects of the present disclosure.
- FIG. 15 is a partially disassembled perspective view of a flexible connector and adapter system being coupled through one embodiment of a port base and holder configured according to aspects of the present disclosure
- FIG. 16 is a perspective view of the assembled flexible connector and adapter system of FIG. 15 according to aspects of the present disclosure
- FIGS. 17 A and 17 B are perspective views of another embodiment of a flexible connector assembly having a key according to aspects of the present disclosure
- FIG. 18 is an interior view of a port showing a protrusion according to aspects of the present disclosure.
- FIGS. 19 A to 19 C are various views of one embodiment of a holder configured according to aspects of the present disclosure.
- FIGS. 20 A and 20 B are perspective views of another embodiment of a holder configured according to aspects of the present disclosure.
- FIG. 21 is a disassembled perspective view of another embodiment of a flexible connector and adapter system including a flexible port according to aspects of the present disclosure
- FIG. 22 is a perspective view of a flexible connector and adapter system coupled through another embodiment of a port base configured according to aspects of the present disclosure.
- FIGS. 23 A and 24 B are perspective and cross-sectional views of the port base of FIG. 22 according to aspects of the present disclosure.
- aspects of the present disclosure provide flexible optical fiber connectors and connector assemblies that allow easy configuration and reconfiguration of optical fiber networks.
- embodiments allow for making external connections to an optical fiber terminal or enclosure without opening the terminal or enclosure.
- FIG. 1 A is a perspective view of one embodiment of a terminal 100 .
- the terminal 100 is an aerial terminal.
- embodiments of connectors disclosed herein are not limited for use with aerial terminals.
- the terminal 100 includes a housing 102 and two covers 104 on either side of the terminal.
- the housing 102 of the aerial terminal 100 includes side panels 108 on opposite sides of the housing.
- Each side panel 108 may include a plurality of ports, including feeder ports 110 and distribution ports 112 .
- the two feeder ports 110 are shown to be larger than the distribution ports 112 .
- each feeder port 110 may be about 14 mm sealed duct port.
- Each feeder port 110 may have a breakoff cap.
- feeder ports 110 may have anti-rotation locking features.
- the 12 smaller ports are distribution ports 112 .
- Each distribution port 112 may be about 10 mm sealed duct port.
- Each distribution port 112 may have a breakoff cap.
- the distribution ports 112 may have anti-rotation locking features.
- the distribution ports 112 may be Clearfield FlexPorts. Although this embodiment shows two feeder ports 110 and 12 distribution ports 112 , other embodiments may include a different number of each type of port.
- the ports 110 and the ports 112 may be sealed.
- the ports 110 and 112 may include knock-out covers that can be removed once a port 110 and 112 is used.
- the ports may also be arranged in a different configuration than the embodiment shown in FIG. 1 A .
- FIG. 1 A shows one of the covers 104 of the terminal 100 being open, revealing a compartment 118 positioned on one side of the terminal.
- each distribution port 112 has a respective entrance tab 120 inside the compartment 118 .
- the entrance tabs 120 must be broken off to use the respective ports 112 .
- the compartment 118 further includes at least one adapter plate 122 .
- the adapter plate 122 includes a plurality of adapters 124 .
- the adapters 124 may correspond to the distribution ports 112 .
- the adapter plates 122 may be arranged in a plurality of rows. In one embodiment, a first row comprising a first adapter plate may correspond to the distribution ports on a first side panel of the terminal, and a second row comprising a second adapter plate may correspond to distribution ports on a second side panel of the terminal.
- FIG. 1 B is a perspective view of the aerial terminal 100 , further showing incoming cables and connectors.
- a cable 126 is coupled to a pushable connector 128 that is configured to couple to an adapter 124 .
- a flexible connector 130 e.g. a Clearfield Flex Connector
- a port 112 e.g. a Clearfield FlexPort
- FIG. 2 is a perspective view of one embodiment of a flexible port (FlexPort) 132 configured to receive embodiments of connectors disclosed herein.
- the flexible port 132 comprises a seal, such as an O-Ring 134 , a press-in element 136 and a clip 138 .
- a flexible port 132 may be pre-installed within the distribution ports of a terminal, such as distribution ports 112 of terminal 100 .
- a flexible port 132 may be installed in the field.
- a flexible port 132 may be installed by placing the seal or O-ring 134 into the desired port hole, placing the press-in element 136 into the hole, and installing the clip 138 into the press-in element.
- the flexible ports 132 may further comprise entrance tabs that must be broken off prior to usage of the flexible ports.
- FIG. 3 is a perspective view of one embodiment of a flexible connector 130 for receiving a pushable connector 128 .
- the flexible connector 130 has a clip groove 139 .
- FIG. 4 is a perspective view of the flexible connector 130 with the pushable connector 128 inserted therethrough.
- a connection from the flexible connector 130 to the adapter 124 requires a pushable connector 128 and also requires that the terminal 100 be opened to make the connection. Accordingly, there is a need for flexible “plug and play” connectors that allow making external connections to an optical fiber terminal or enclosure that has flexible ports (FlexPorts) without opening the terminal or enclosure.
- the flexible port 132 may further be configured to receive an adapter therein.
- the adapter within the flexible port may be coupled to various embodiments of connectors disclosed herein, thereby avoiding the need to open a terminal, box, or any other enclosure on which the flexible port is located.
- FIG. 5 is a perspective view of one embodiment of a flexible connector configured according to aspects of the present disclosure.
- the connector 140 includes a housing 142 configured to couple to a flexible port, such as port 132 shown in FIG. 2 .
- the connector 140 may be a 10 mm flex connector configured to couple to a 10 mm flex port.
- the connector 140 may include a first housing portion 144 and a second housing portion 146 .
- the first housing portion 144 and the second housing portion 146 may have different diameters.
- the first housing portion 144 may have a smaller diameter than the second housing portion 146 .
- the first housing portion 144 may be configured to couple to a ferrule connector assembly, for example as shown and further discussed below with reference to FIGS. 6 to 14 .
- the flexible connector 140 may have a first prong 148 and a second prong 150 , separated by a slit 151 .
- the prongs may have a double-D hole 152 formed between them.
- Each of the prongs 148 and 150 may have a respective flat 154 .
- the flats 154 may be relatively long, for example, to accommodate coupling to the ferrule connector assembly.
- the flexible connector 140 may thus be coupled to a terminating connector housing a ferrule.
- the housing 142 of the flexible connector 140 may not have a clip groove, such as clip groove 139 shown in FIG. 3 .
- FIG. 6 is an exploded view of a flexible connector assembly configured according to aspects of the present disclosure.
- the flexible connector assembly includes the flexible connector 140 , a back post 156 , a spring 158 , and a ferrule 160 .
- the double-D hole 152 of the flexible connector 140 is configured to hold at least a portion of the back post 156 .
- the back post 156 is further configured to receive the spring 158 and the ferrule 160 .
- the back post is an SC back post. In other embodiments, different types of back posts may be used.
- An optical fiber cable 162 comprising a plurality of optical fibers 164 may be received by the second housing portion 146 of the flexible connector 140 , and the optical fiber 164 may be extended to the ferrule 160 and bonded to the ferrule.
- FIG. 7 is a perspective view of the SC back post 156 .
- the SC back post 156 is longer than a traditional SC back post.
- the back post 156 further comprises flats 166 configured to be held by the double-D hole 152 of the flexible connector 140 .
- FIG. 8 shows an assembled perspective view of the flexible connector assembly of FIG. 6 .
- the snap-in back post 156 is snapped into the double-D hole 152 and coupled to the first housing portion 144 of the flexible connector 140 .
- the optical fiber 164 is received through the ferrule 160 , epoxied and cured.
- FIG. 9 is a perspective view of the flexible connector assembly of FIG. 8 further comprising a housing 170 .
- the housing 170 may be an SC white housing.
- the housing 170 may be configured to house the ferrule 160 and to couple to the back post 156 .
- the housing 170 may have keys 172 that are keyed to the flexible connector flats 154 by the back post 156 inside the double-D shaped hole 152 .
- FIG. 10 is a perspective view of the flexible connector assembly of FIG. 9 , further comprising an outer housing 174 .
- the outer housing 174 may be configured to house the inner housing 170 and at least a portion of the back post 156 .
- the outer housing 170 may be a temporary SC outer housing for production polishing. The temporary SC outer housing may be replaced with a final housing after optical inspection.
- FIG. 11 is a perspective view of the flexible connector assembly of FIG. 10 , further illustrating the outer housing 174 .
- the outer housing 174 may be configured to fit through a 10 mm port opening, such as that of the flexible port 132 shown in FIG. 2 .
- the outer housing 174 may be modified to prevent adapter latching.
- the flexible connector assembly of FIG. 11 comprises the flexible connector 140 and a terminating connector.
- the terminating connector is an SC connector 175 .
- the SC connector 175 comprises an outer housing 174 , inner housing 170 , spring 158 , ferrule 160 , and back post 156 .
- the flexible connector 140 may be configured to prevent the attached terminating connector from rotating and/or being pulled out from the tip of the flexible connector.
- FIG. 12 is a perspective view of another embodiment of a flexible connector 180 .
- the flexible connector 180 is configured similarly to the connector 140 described above. Further, the flexible connector 180 has a protrusion 182 configured to receive a crimp ring to prevent rotation of the connector attached to the flexible connector.
- the protrusion 182 may be a cylindrical section emanating from within the two prongs 184 and 186 of the flexible connector 180 .
- the cylindrical protrusion 182 may also include a plurality of prongs, such as a first prong 188 and a second prong 190 , separated by a slit 192 , and with a double-D hole 194 located between them.
- the double-D hole 194 of the protrusion 182 is also configured to receive at least a portion of the back post of the connector coupled to the flexible connector.
- FIG. 13 is an exploded perspective view of a flexible connector assembly including the flexible connector 180 of FIG. 12 .
- the flexible connector assembly has a crimp ring 196 .
- the crimp ring 196 is sized to fit onto the cylindrical protrusion 182 .
- FIG. 14 is an assembled perspective view of the flexible connector assembly of FIG. 13 , further showing the crimp ring disposed on the cylindrical protrusion 182 between the flexible connector 180 and the outer housing 174 of the terminating SC connector coupled to the flexible connector.
- the crimp ring may be used to prevent rotation of the terminating connector relative to the flexible connector.
- Various embodiments provide flexible connectors that are truly “plug and play” without entering the closure of terminals or closures, such as Clearfield YourX terminal(s), FlexBox, YourX TAP, etc.
- Various embodiments have a ferrule/connector assembly configured to snap firmly into the flexible connector body, as described above, and then be mateable to an adapter/connector on the other side of a flexible port (FlexPort) by inserting the flexible connector into the port and snapping the ferrule/connector in place, for example as shown and described further below in relation to FIGS. 15 to 23 .
- the pushable end may enter the flexible connector through the back of connector, with the key and lock protruding far enough out of the flexible connector to allow room for “mating” inside adapter of the flexible port.
- Various embodiments may use the flexible connectors disclosed herein in conjunction with various types of connectors, including but not limited to SC, LC and MPO connectors.
- Various embodiments of flexible connectors disclosed herein may be configured to accept both a pushable connector, for example as shown in FIG. 4 , as well as a snap-in connector, for example as shown in FIGS. 5 to 14 .
- Embodiments of connectors disclosed herein may be watertight and configured to prevent contamination. Embodiments exposed to elements may be impervious to weather, ultraviolet radiation per UL “F-1” rating.
- Assembly may include inserting a connector into the flexible connector to form a flexible connector assembly.
- the flexible connector assembly may then be inserted into an adapter located inside a flexible port, for example as shown and described below in relation to FIGS. 15 to 23 .
- Embodiments of the connector may be keyed for proper alignment in adapter at mating.
- the adapter within the flexible port may be configured to receive the ferrule of the flexible connector assembly at one end.
- the adapter within the port may also be configured to receive a standard connector such as a standard SC, LC or MPO connector at the other end of the adapter.
- One end of the adapter may be accessible from outside the terminal or enclosure on which the flexible port is located, whereas the other end of the adapter may be accessible from inside the terminal or enclosure.
- the adapter plug or at least one side of the adapter may be latchless to allow removal of the flexible connector assembly.
- FIG. 15 shows a partially disassembled view of a flexible connector and adapter system 200 .
- a flexible connector assembly 202 is configured to couple to an adapter 204 through the opening of a port 208 .
- the port 208 may comprise a flexible port 132 as described above in relation to FIG. 2 .
- a port base 206 comprises a plurality of ports 208 with openings.
- the port base 206 may further comprise a plurality of ribs 209 positioned around each of the ports 208 .
- the port base 206 may be positioned, for example, within a terminal such as that shown in FIG. 1 A .
- a holder 210 is configured for coupling to a port 208 at one end, and for receiving and holding the adapter 204 through the other end, as described further below in relation to FIG. 19 .
- FIG. 16 shows the assembled flexible connector and adapter system of FIG. 15 .
- the flexible connector assembly 202 is mateable with the adapter 204 held by the holder 210 on the other side of the port base 206 by inserting the terminating connector at the end of the flexible connector assembly into the port 208 and snapping the ferrule/connector in place.
- FIGS. 17 A and 17 B show the flexible connector assembly 202 including a flexible connector coupled to a terminating connector having an outer housing 212 .
- the terminating connector is an SC connector.
- the outer housing may be configured to prevent locking tabs on the adapter from engaging.
- the flexible connector assembly 202 includes a key way 214 configured to prevent the flexible connector assembly from turning.
- a protrusion 216 on an interior surface 218 of the port 208 of the port base 206 shown in FIG. 18 , fits within the key way 214 of the flexible connector assembly 202 , thereby preventing the flexible connector from turning.
- FIGS. 19 A to 19 C show one embodiment of a holder 210 configured according to aspects of the present disclosure.
- the holder 210 is a spring holder comprising a base portion 220 at one end and an adapter holding portion 222 at the other end.
- the base portion 220 is configured to couple to the port 208 .
- any coupling mechanism may be used for coupling the base portion 220 to the port 208 .
- the base portion 220 may be threaded onto the port 208 , may be snapped in or coupled by a latch.
- the holders 210 may be removable from the ports 208 .
- the ports 208 may be configured to receive a plurality of different types of holders. Each holder may be configured to hold a different type of adapter.
- FIGS. 20 A and 20 B show another embodiment of a spring holder 230 comprising a base portion 232 and an adapter holding portion 234 , with a cutout 236 for receiving a connector.
- holders may be formed integrally with the ports.
- the holder 210 further comprises an adapter holding portion 222 .
- the adapter holding portion 222 is configured to receive and retain an adapter 204 , as shown for example in FIGS. 15 and 16 .
- any mechanism may be used for retaining adapters within the adapter holding portion 222 of the holder 210 .
- the adapter holder portion 222 is shaped and sized to receive an SC adapter.
- Other embodiments of adapter holding portions may be shaped and sized differently for other types of connectors.
- the base portion 220 of the holder 210 is configured to allow for the best alignment, orientation and positioning of the flexible connector assembly 202 with the adapter 204 .
- the holder 210 is self-centering, but configured to move in any direction as shown for example in FIG. 19 B .
- the holder 210 is not influenced by the orientation of the terminal or enclosure, or gravity.
- the holder 210 is configured to provide force to maintain connector mating.
- the base portion 220 of the holder 210 includes a cutout 224 that matches the shape and size of the terminating connector to be received, thereby determining the orientation of the connector.
- FIG. 19 C shows the cutout 224 corresponding to an SC terminating connector.
- Other embodiments of holders may have different cutouts for different types of terminating connectors, such as an LC connector.
- holders may be formed integrally as a single piece.
- the base portion 220 and the adapter holding portion 222 may be molded or formed integrally with the spring holder.
- the holder may comprise multiple pieces.
- port bases and ports disclosed herein may be configured to receive both a flexible connector with a pushable connector, as well as a flexible connector coupled to a terminating connector as disclosed herein.
- the ports may be configured as flexible ports.
- FIG. 21 shows a disassembled perspective view of another embodiment of a flexible connector and adapter system 240 using a flexible port 132 as described in relation to FIG. 2 .
- a flexible connector assembly 242 is configured to couple to an adapter 244 through the opening of a port 248 .
- the port 248 comprises a flexible port 132 .
- the flexible port 132 may be installed by placing the seal or O-ring 134 into the opening of the port 248 located on the port base 246 , placing the press-in element 136 into the opening, and installing the clip 138 into the press-in element.
- the other end of the port 248 is configured to receive the holder 250 .
- a holder 250 is configured for coupling to a port 248 at one end, and for receiving and holding the adapter 244 through the other end. For example, the holder 250 may be snapped into the port 248 .
- the port base 246 comprises a plurality of ports 248 with openings.
- the port base 246 may be positioned, for example, within a terminal such as that shown in FIG. 1 A .
- the flexible connector assembly 242 is mateable with the adapter 244 held by the holder 250 on the other side of the port base 246 by inserting the terminating connector at the end of the flexible connector assembly into the flexible port 132 and snapping the ferrule/connector in place.
- FIG. 22 is a perspective view of a flexible connector and adapter system 252 comprising flexible connectors 254 coupled to adapters 256 .
- a port base 258 comprises a plurality of ports 260 with openings. The port base 258 may be positioned, for example, within a terminal such as that shown in FIG. 1 A .
- the ports 260 may be flexible ports configured to receive flexible connectors coupled with pushable connectors.
- the ports 260 may also be configured to receive flexible connector assemblies comprising a flexible connector coupled to a terminating connector as disclosed herein.
- a plate 262 has a plurality of holes corresponding to the ports on the port base 258 .
- the plate 262 may be mounted to the port base 258 using screws and bosses and provides the undercut for a plurality of spring holders 264 to be secured.
- the plate 262 may be molded with the port base 258 .
- the ports 260 may protrude from the holes on the plate 262 .
- the spring holders 264 are configured to center on the flexible connector core, and may be interchangeable.
- the spring holders 264 are configured to receive and hold the adapters 256 .
- the plate 262 may be mounted onto the port base 258 so as to allow securing of the holders 264 for mounting the adapters 256 at the ports. Alternatively, plate 262 may be removed and adapters may be placed within the terminal as shown in FIG. 1 A for use with pushable connectors.
- FIGS. 23 A and 24 B are perspective and cross-sectional views of the port base 258 of FIG. 22 .
- the port base 258 comprises a plurality of ports 260 and is configured to mount, for example, at a side of a terminal as shown in FIG. 1 A .
- the ports 260 may be configured as flexible ports, and may be configured to receive a flexible connector accommodating a pushable connector therethrough, and also configured to receive the flexible connector coupled to a terminating connector as disclosed in various embodiments herein.
- compositions, methods, and devices are described in terms of “comprising” various components or steps (interpreted as meaning “including, but not limited to”), the compositions, methods, and devices can also “consist essentially of” or “consist of” the various components and steps, and such terminology should be interpreted as defining essentially closed-member groups.
- a range includes each individual member.
- a group having 1-3 cells refers to groups having 1, 2, or 3 cells.
- a group having 1-5 cells refers to groups having 1, 2, 3, 4, or 5 cells, and so forth.
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Abstract
Description
- This application is a divisional application of and claims priority to U.S. patent application Ser. No. 16/897,587 filed Jun. 10, 2020 which claims benefit of priority under 35 U.S.C. 119(e) to the filing date of U.S. Provisional Patent Application 62/859,828, filed on Jun. 11, 2019, entitled, “Flexible Optical Fiber Connectors and Assemblies,” the contents of both of which are incorporated herein by reference in their entirety.
- The present disclosure relates generally to optical fiber communications, and more specifically to optical fiber connectors and assemblies.
- Data, voice, and other communication networks are increasingly using fiber optics to carry information. In a fiber optic network, each individual fiber is generally connected to both a source and a destination device. Additionally, along the fiber optic run between the source and the destination, various connections or couplings may be made on the optical fiber to adjust the length of the fiber or to provide termination connection ports for end users at which one or more fibers may be branched from a feed cable. In instances when the connection may be exposed to weather conditions, an essentially waterproof configuration of components is needed.
- To interconnect the cables, various cable connector designs provide for low insertion loss and stability. Some example connectors may include, but are not limited to, SC, Dual LC, LC, ST and MPO connectors. In most of these designs, ferrules (one in each connector, or one in the connector and one in the apparatus or device), each containing an optical fiber end, are butted together end to end and light travels across the junction.
- With the increasing desire for completely optical networks, “fiber to the premises” (FTTP) or “fiber to the home” (FTTH) systems are being developed to provide optical fibers that extend from the source to the site of the end-user. There is a need for flexible, customizable fiber distribution systems that may be easily expanded or reconfigured. Further, there is a need for flexible optical fiber connectors and assemblies that allow easy configuration of optical fiber networks.
- According to one aspect of the present disclosure, there is provided a flexible optical fiber connector comprising a first housing component configured to couple to a terminating connector, a second housing component configured to receive an optical fiber for termination in the terminating connector. The first housing component and the second housing component are further configured to receive a pushable connector therethrough.
- The terminating connector may comprise a back post. The back post may be configured to receive a spring and a ferrule. In some embodiments, the terminating connector may be an SC connector.
- In some embodiments, the first housing component may comprise a first prong and a second prong separated by a slit, each of the first prong and the second prong having a double-D hole and a flat configured to accommodate coupling the first housing component to the terminating connector. In some embodiments, the flexible optical fiber connector may further comprise a key configured to prevent rotation of the flexible optical fiber connector within a port.
- According to another aspect, there is provided a flexible optical fiber connector assembly comprising a flexible connector having a housing configured to receive an optical fiber, and a terminating connector comprising a back post and a ferrule configured to receive the optical fiber. The flexible connector may be configured to couple to the terminating connector.
- In some embodiments, the terminating connector may further comprise an outer housing. In some embodiments, the flexible optical fiber connector assembly may further comprise a crimp ring disposed between the flexible connector and the outer housing to prevent rotation of the terminating connector relative to the flexible connector. The outer housing may comprise a key configured to prevent rotation of the optical fiber connector assembly. In some embodiments, the terminating connector may be configured to decouple from the flexible connector to allow the flexible connector to receive a pushable connector therethrough in lieu of the terminating connector.
- According to another aspect, there is provided a terminal comprising a port base comprising a plurality of ports. At least one port of the plurality of ports may be configured to receive a flexible connector. The flexible connector may be configured to receive a pushable connector. The flexible connector may also be configured to couple to a terminating connector. The at least one port may be further configured to receive a holder for holding an adapter configured to receive the terminating connector. In some embodiments, the port base may be further configured to receive a plate configured to couple to the port base to secure the holder for holding the adapter to the at least one port.
- In various embodiments of the terminal, the flexible connector may comprise a first housing component configured to couple to the terminating connector, and a second housing component configured to receive an optical fiber for termination in the terminating connector. In some embodiments, the first housing component may comprise a first prong and a second prong separated by a slit, each of the first prong and the second prong having a double-D hole and a flat configured to accommodate coupling the first housing component to the terminating connector. In various embodiments, the terminating connector may comprise a back post configured to couple to the first housing component, a spring, and a ferrule for terminating the optical fiber. The back post may be further configured to receive the spring and the ferrule. In some embodiments, the terminating connector may further comprise an internal housing for housing the ferrule and an outer housing.
- In various embodiments, the holder may comprise a base portion configured to couple to the at least one port, and an adapter holding portion configured to hold the adapter. In some embodiments, the holder may be a single integral piece. In some embodiments, the at least one port may be configured to receive a plurality of different holders, each holder of the plurality of different holders being configured to hold a different adapter for coupling to a different terminating connector. In various embodiments, the at least one port may be a flexible port comprising a seal, a press-in element, and a clip.
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FIG. 1A is a perspective view of one embodiment of a terminal; -
FIG. 1B is a perspective view of the terminal ofFIG. 1A , further showing incoming cables and connectors; -
FIG. 2 is a perspective view of one embodiment of a flexible port (FlexPort) configured to receive embodiments of connectors according to aspects of the present disclosure; -
FIG. 3 is a perspective view of one embodiment of a flexible connector (FlexConnector) for receiving a pushable connector; -
FIG. 4 is a perspective view of the flexible connector ofFIG. 3 with a pushable connector therethrough; -
FIG. 5 is a perspective view of one embodiment of a flexible connector configured according to aspects of the present disclosure; -
FIG. 6 is an exploded view of a flexible connector assembly configured according to aspects of the present disclosure; -
FIG. 7 is a perspective view of one embodiment of an SC back post configured according to aspects of the present disclosure; -
FIG. 8 is an assembled perspective view of the flexible connector assembly ofFIG. 6 according to aspects of the present disclosure; -
FIG. 9 is a perspective view of the flexible connector assembly ofFIG. 8 further comprising a housing according to aspects of the present disclosure; -
FIG. 10 is a perspective view of the flexible connector assembly ofFIG. 9 further comprising an outer housing according to aspects of the present disclosure; -
FIG. 11 is a perspective view of the flexible connector assembly ofFIG. 10 , further illustrating the outer housing according to aspects of the present disclosure; -
FIG. 12 is a perspective view of another embodiment of a flexible connector having a protrusion configured to receive a crimp ring according to aspects of the present disclosure; -
FIG. 13 is an exploded perspective view of a flexible connector assembly having a crimp ring according to aspects of the present disclosure; -
FIG. 14 is an assembled perspective view of the flexible connector assembly ofFIG. 13 according to aspects of the present disclosure; -
FIG. 15 is a partially disassembled perspective view of a flexible connector and adapter system being coupled through one embodiment of a port base and holder configured according to aspects of the present disclosure; -
FIG. 16 is a perspective view of the assembled flexible connector and adapter system ofFIG. 15 according to aspects of the present disclosure; -
FIGS. 17A and 17B are perspective views of another embodiment of a flexible connector assembly having a key according to aspects of the present disclosure; -
FIG. 18 is an interior view of a port showing a protrusion according to aspects of the present disclosure; -
FIGS. 19A to 19C are various views of one embodiment of a holder configured according to aspects of the present disclosure; -
FIGS. 20A and 20B are perspective views of another embodiment of a holder configured according to aspects of the present disclosure; -
FIG. 21 is a disassembled perspective view of another embodiment of a flexible connector and adapter system including a flexible port according to aspects of the present disclosure; -
FIG. 22 is a perspective view of a flexible connector and adapter system coupled through another embodiment of a port base configured according to aspects of the present disclosure; and -
FIGS. 23A and 24B are perspective and cross-sectional views of the port base ofFIG. 22 according to aspects of the present disclosure. - The present disclosure is not limited in terms of the particular embodiments described in this application, which are intended as illustrations of various aspects. Many modifications and variations can be made without departing from its spirit and scope, as will be apparent to those skilled in the art.
- Aspects of the present disclosure provide flexible optical fiber connectors and connector assemblies that allow easy configuration and reconfiguration of optical fiber networks. For example, embodiments allow for making external connections to an optical fiber terminal or enclosure without opening the terminal or enclosure.
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FIG. 1A is a perspective view of one embodiment of a terminal 100. The terminal 100 is an aerial terminal. However, embodiments of connectors disclosed herein are not limited for use with aerial terminals. For example, embodiments may be used with other types of terminals and enclosures. The terminal 100 includes ahousing 102 and twocovers 104 on either side of the terminal. Thehousing 102 of theaerial terminal 100 includesside panels 108 on opposite sides of the housing. Eachside panel 108 may include a plurality of ports, includingfeeder ports 110 anddistribution ports 112. The twofeeder ports 110 are shown to be larger than thedistribution ports 112. In one example, eachfeeder port 110 may be about 14 mm sealed duct port. Eachfeeder port 110 may have a breakoff cap. In some embodiments,feeder ports 110 may have anti-rotation locking features. The 12 smaller ports aredistribution ports 112. Eachdistribution port 112 may be about 10 mm sealed duct port. Eachdistribution port 112 may have a breakoff cap. In some embodiments, thedistribution ports 112 may have anti-rotation locking features. Thedistribution ports 112 may be Clearfield FlexPorts. Although this embodiment shows twofeeder ports 110 and 12distribution ports 112, other embodiments may include a different number of each type of port. Theports 110 and theports 112 may be sealed. Theports port FIG. 1A . -
FIG. 1A shows one of thecovers 104 of the terminal 100 being open, revealing acompartment 118 positioned on one side of the terminal. As shown inFIG. 1A , eachdistribution port 112 has arespective entrance tab 120 inside thecompartment 118. Theentrance tabs 120 must be broken off to use therespective ports 112. Thecompartment 118 further includes at least oneadapter plate 122. Theadapter plate 122 includes a plurality ofadapters 124. Theadapters 124 may correspond to thedistribution ports 112. Theadapter plates 122 may be arranged in a plurality of rows. In one embodiment, a first row comprising a first adapter plate may correspond to the distribution ports on a first side panel of the terminal, and a second row comprising a second adapter plate may correspond to distribution ports on a second side panel of the terminal. -
FIG. 1B is a perspective view of theaerial terminal 100, further showing incoming cables and connectors. For example, acable 126 is coupled to apushable connector 128 that is configured to couple to anadapter 124. A flexible connector 130 (e.g. a Clearfield Flex Connector) coupled to a port 112 (e.g. a Clearfield FlexPort) is configured to receive thepushable connector 128. -
FIG. 2 is a perspective view of one embodiment of a flexible port (FlexPort) 132 configured to receive embodiments of connectors disclosed herein. Theflexible port 132 comprises a seal, such as an O-Ring 134, a press-inelement 136 and aclip 138. In some embodiments, aflexible port 132 may be pre-installed within the distribution ports of a terminal, such asdistribution ports 112 ofterminal 100. In other embodiments, aflexible port 132 may be installed in the field. Aflexible port 132 may be installed by placing the seal or O-ring 134 into the desired port hole, placing the press-inelement 136 into the hole, and installing theclip 138 into the press-in element. Theflexible ports 132 may further comprise entrance tabs that must be broken off prior to usage of the flexible ports. -
FIG. 3 is a perspective view of one embodiment of aflexible connector 130 for receiving apushable connector 128. Theflexible connector 130 has a clip groove 139.FIG. 4 is a perspective view of theflexible connector 130 with thepushable connector 128 inserted therethrough. - Referring back to
FIG. 1B , a connection from theflexible connector 130 to theadapter 124 requires apushable connector 128 and also requires that the terminal 100 be opened to make the connection. Accordingly, there is a need for flexible “plug and play” connectors that allow making external connections to an optical fiber terminal or enclosure that has flexible ports (FlexPorts) without opening the terminal or enclosure. - In various embodiments disclosed herein, the
flexible port 132, as illustrated for example inFIG. 2 , may further be configured to receive an adapter therein. The adapter within the flexible port may be coupled to various embodiments of connectors disclosed herein, thereby avoiding the need to open a terminal, box, or any other enclosure on which the flexible port is located. -
FIG. 5 is a perspective view of one embodiment of a flexible connector configured according to aspects of the present disclosure. Theconnector 140 includes ahousing 142 configured to couple to a flexible port, such asport 132 shown inFIG. 2 . Theconnector 140 may be a 10 mm flex connector configured to couple to a 10 mm flex port. Theconnector 140 may include afirst housing portion 144 and asecond housing portion 146. Thefirst housing portion 144 and thesecond housing portion 146 may have different diameters. For example, thefirst housing portion 144 may have a smaller diameter than thesecond housing portion 146. Thefirst housing portion 144 may be configured to couple to a ferrule connector assembly, for example as shown and further discussed below with reference toFIGS. 6 to 14 . Theflexible connector 140 may have afirst prong 148 and asecond prong 150, separated by aslit 151. The prongs may have a double-D hole 152 formed between them. Each of theprongs flats 154 may be relatively long, for example, to accommodate coupling to the ferrule connector assembly. Theflexible connector 140 may thus be coupled to a terminating connector housing a ferrule. Thehousing 142 of theflexible connector 140 may not have a clip groove, such as clip groove 139 shown inFIG. 3 . -
FIG. 6 is an exploded view of a flexible connector assembly configured according to aspects of the present disclosure. The flexible connector assembly includes theflexible connector 140, aback post 156, aspring 158, and aferrule 160. The double-D hole 152 of theflexible connector 140 is configured to hold at least a portion of theback post 156. Theback post 156 is further configured to receive thespring 158 and theferrule 160. In this embodiment, the back post is an SC back post. In other embodiments, different types of back posts may be used. Anoptical fiber cable 162 comprising a plurality ofoptical fibers 164 may be received by thesecond housing portion 146 of theflexible connector 140, and theoptical fiber 164 may be extended to theferrule 160 and bonded to the ferrule. -
FIG. 7 is a perspective view of the SCback post 156. The SCback post 156 is longer than a traditional SC back post. Theback post 156 further comprisesflats 166 configured to be held by the double-D hole 152 of theflexible connector 140. -
FIG. 8 shows an assembled perspective view of the flexible connector assembly ofFIG. 6 . As shown, the snap-inback post 156 is snapped into the double-D hole 152 and coupled to thefirst housing portion 144 of theflexible connector 140. Theoptical fiber 164 is received through theferrule 160, epoxied and cured. -
FIG. 9 is a perspective view of the flexible connector assembly ofFIG. 8 further comprising ahousing 170. Thehousing 170 may be an SC white housing. Thehousing 170 may be configured to house theferrule 160 and to couple to theback post 156. Thehousing 170 may havekeys 172 that are keyed to theflexible connector flats 154 by theback post 156 inside the double-D shapedhole 152. -
FIG. 10 is a perspective view of the flexible connector assembly ofFIG. 9 , further comprising anouter housing 174. Theouter housing 174 may be configured to house theinner housing 170 and at least a portion of theback post 156. In some embodiments, theouter housing 170 may be a temporary SC outer housing for production polishing. The temporary SC outer housing may be replaced with a final housing after optical inspection. -
FIG. 11 is a perspective view of the flexible connector assembly ofFIG. 10 , further illustrating theouter housing 174. Theouter housing 174 may be configured to fit through a 10 mm port opening, such as that of theflexible port 132 shown inFIG. 2 . In some embodiments, theouter housing 174 may be modified to prevent adapter latching. The flexible connector assembly ofFIG. 11 comprises theflexible connector 140 and a terminating connector. In this embodiment, the terminating connector is anSC connector 175. TheSC connector 175 comprises anouter housing 174,inner housing 170,spring 158,ferrule 160, andback post 156. In various embodiments, theflexible connector 140 may be configured to prevent the attached terminating connector from rotating and/or being pulled out from the tip of the flexible connector. -
FIG. 12 is a perspective view of another embodiment of aflexible connector 180. Theflexible connector 180 is configured similarly to theconnector 140 described above. Further, theflexible connector 180 has aprotrusion 182 configured to receive a crimp ring to prevent rotation of the connector attached to the flexible connector. Theprotrusion 182 may be a cylindrical section emanating from within the twoprongs flexible connector 180. Thecylindrical protrusion 182 may also include a plurality of prongs, such as afirst prong 188 and asecond prong 190, separated by aslit 192, and with a double-D hole 194 located between them. The double-D hole 194 of theprotrusion 182 is also configured to receive at least a portion of the back post of the connector coupled to the flexible connector. -
FIG. 13 is an exploded perspective view of a flexible connector assembly including theflexible connector 180 ofFIG. 12 . The flexible connector assembly has acrimp ring 196. Thecrimp ring 196 is sized to fit onto thecylindrical protrusion 182.FIG. 14 is an assembled perspective view of the flexible connector assembly ofFIG. 13 , further showing the crimp ring disposed on thecylindrical protrusion 182 between theflexible connector 180 and theouter housing 174 of the terminating SC connector coupled to the flexible connector. In various embodiments, the crimp ring may be used to prevent rotation of the terminating connector relative to the flexible connector. - Various embodiments provide flexible connectors that are truly “plug and play” without entering the closure of terminals or closures, such as Clearfield YourX terminal(s), FlexBox, YourX TAP, etc. Various embodiments have a ferrule/connector assembly configured to snap firmly into the flexible connector body, as described above, and then be mateable to an adapter/connector on the other side of a flexible port (FlexPort) by inserting the flexible connector into the port and snapping the ferrule/connector in place, for example as shown and described further below in relation to
FIGS. 15 to 23 . - In some embodiments, the pushable end may enter the flexible connector through the back of connector, with the key and lock protruding far enough out of the flexible connector to allow room for “mating” inside adapter of the flexible port.
- Various embodiments may use the flexible connectors disclosed herein in conjunction with various types of connectors, including but not limited to SC, LC and MPO connectors.
- Various embodiments of flexible connectors disclosed herein may be configured to accept both a pushable connector, for example as shown in
FIG. 4 , as well as a snap-in connector, for example as shown inFIGS. 5 to 14 . - Embodiments of connectors disclosed herein may be watertight and configured to prevent contamination. Embodiments exposed to elements may be impervious to weather, ultraviolet radiation per UL “F-1” rating.
- Various embodiments may be assembled by the user without tools. Assembly may include inserting a connector into the flexible connector to form a flexible connector assembly. The flexible connector assembly may then be inserted into an adapter located inside a flexible port, for example as shown and described below in relation to
FIGS. 15 to 23 . Embodiments of the connector may be keyed for proper alignment in adapter at mating. In various embodiments, the adapter within the flexible port may be configured to receive the ferrule of the flexible connector assembly at one end. The adapter within the port may also be configured to receive a standard connector such as a standard SC, LC or MPO connector at the other end of the adapter. One end of the adapter may be accessible from outside the terminal or enclosure on which the flexible port is located, whereas the other end of the adapter may be accessible from inside the terminal or enclosure. In some embodiments, the adapter plug or at least one side of the adapter may be latchless to allow removal of the flexible connector assembly. -
FIG. 15 shows a partially disassembled view of a flexible connector andadapter system 200. Aflexible connector assembly 202 is configured to couple to anadapter 204 through the opening of aport 208. In some embodiments, for example as described below in relation toFIG. 21 , theport 208 may comprise aflexible port 132 as described above in relation toFIG. 2 . Aport base 206 comprises a plurality ofports 208 with openings. Theport base 206 may further comprise a plurality ofribs 209 positioned around each of theports 208. Theport base 206 may be positioned, for example, within a terminal such as that shown inFIG. 1A . Aholder 210 is configured for coupling to aport 208 at one end, and for receiving and holding theadapter 204 through the other end, as described further below in relation toFIG. 19 . -
FIG. 16 shows the assembled flexible connector and adapter system ofFIG. 15 . Theflexible connector assembly 202 is mateable with theadapter 204 held by theholder 210 on the other side of theport base 206 by inserting the terminating connector at the end of the flexible connector assembly into theport 208 and snapping the ferrule/connector in place. -
FIGS. 17A and 17B show theflexible connector assembly 202 including a flexible connector coupled to a terminating connector having anouter housing 212. In this embodiment, the terminating connector is an SC connector. The outer housing may be configured to prevent locking tabs on the adapter from engaging. In this embodiment, theflexible connector assembly 202 includes akey way 214 configured to prevent the flexible connector assembly from turning. For example, aprotrusion 216 on aninterior surface 218 of theport 208 of theport base 206, shown inFIG. 18 , fits within thekey way 214 of theflexible connector assembly 202, thereby preventing the flexible connector from turning. -
FIGS. 19A to 19C show one embodiment of aholder 210 configured according to aspects of the present disclosure. Theholder 210 is a spring holder comprising abase portion 220 at one end and anadapter holding portion 222 at the other end. Thebase portion 220 is configured to couple to theport 208. In various embodiments, any coupling mechanism may be used for coupling thebase portion 220 to theport 208. For example, thebase portion 220 may be threaded onto theport 208, may be snapped in or coupled by a latch. - The
holders 210 may be removable from theports 208. Theports 208 may be configured to receive a plurality of different types of holders. Each holder may be configured to hold a different type of adapter. For example,FIGS. 20A and 20B show another embodiment of aspring holder 230 comprising abase portion 232 and anadapter holding portion 234, with acutout 236 for receiving a connector. In other embodiments, holders may be formed integrally with the ports. - Referring again to
FIGS. 19A to 19C , theholder 210 further comprises anadapter holding portion 222. Theadapter holding portion 222 is configured to receive and retain anadapter 204, as shown for example inFIGS. 15 and 16 . In various embodiments, any mechanism may be used for retaining adapters within theadapter holding portion 222 of theholder 210. In the embodiment shown inFIGS. 19A to 19C , theadapter holder portion 222 is shaped and sized to receive an SC adapter. Other embodiments of adapter holding portions may be shaped and sized differently for other types of connectors. - The
base portion 220 of theholder 210 is configured to allow for the best alignment, orientation and positioning of theflexible connector assembly 202 with theadapter 204. Theholder 210 is self-centering, but configured to move in any direction as shown for example inFIG. 19B . Theholder 210 is not influenced by the orientation of the terminal or enclosure, or gravity. Theholder 210 is configured to provide force to maintain connector mating. Thebase portion 220 of theholder 210 includes acutout 224 that matches the shape and size of the terminating connector to be received, thereby determining the orientation of the connector. For example,FIG. 19C shows thecutout 224 corresponding to an SC terminating connector. Other embodiments of holders may have different cutouts for different types of terminating connectors, such as an LC connector. - Various embodiments of holders may be formed integrally as a single piece. For example, the
base portion 220 and theadapter holding portion 222 may be molded or formed integrally with the spring holder. In other embodiments, the holder may comprise multiple pieces. - Various embodiments of port bases and ports disclosed herein may be configured to receive both a flexible connector with a pushable connector, as well as a flexible connector coupled to a terminating connector as disclosed herein. In various embodiments, the ports may be configured as flexible ports.
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FIG. 21 shows a disassembled perspective view of another embodiment of a flexible connector andadapter system 240 using aflexible port 132 as described in relation toFIG. 2 . Aflexible connector assembly 242 is configured to couple to anadapter 244 through the opening of aport 248. In this embodiment, theport 248 comprises aflexible port 132. Theflexible port 132 may be installed by placing the seal or O-ring 134 into the opening of theport 248 located on theport base 246, placing the press-inelement 136 into the opening, and installing theclip 138 into the press-in element. The other end of theport 248 is configured to receive theholder 250. Aholder 250 is configured for coupling to aport 248 at one end, and for receiving and holding theadapter 244 through the other end. For example, theholder 250 may be snapped into theport 248. Theport base 246 comprises a plurality ofports 248 with openings. Theport base 246 may be positioned, for example, within a terminal such as that shown inFIG. 1A . Theflexible connector assembly 242 is mateable with theadapter 244 held by theholder 250 on the other side of theport base 246 by inserting the terminating connector at the end of the flexible connector assembly into theflexible port 132 and snapping the ferrule/connector in place. -
FIG. 22 is a perspective view of a flexible connector andadapter system 252 comprisingflexible connectors 254 coupled toadapters 256. Aport base 258 comprises a plurality ofports 260 with openings. Theport base 258 may be positioned, for example, within a terminal such as that shown inFIG. 1A . In some embodiments, theports 260 may be flexible ports configured to receive flexible connectors coupled with pushable connectors. Theports 260 may also be configured to receive flexible connector assemblies comprising a flexible connector coupled to a terminating connector as disclosed herein. Aplate 262 has a plurality of holes corresponding to the ports on theport base 258. Theplate 262 may be mounted to theport base 258 using screws and bosses and provides the undercut for a plurality ofspring holders 264 to be secured. In some embodiments, theplate 262 may be molded with theport base 258. Theports 260 may protrude from the holes on theplate 262. Thespring holders 264 are configured to center on the flexible connector core, and may be interchangeable. Thespring holders 264 are configured to receive and hold theadapters 256. Theplate 262 may be mounted onto theport base 258 so as to allow securing of theholders 264 for mounting theadapters 256 at the ports. Alternatively,plate 262 may be removed and adapters may be placed within the terminal as shown inFIG. 1A for use with pushable connectors. -
FIGS. 23A and 24B are perspective and cross-sectional views of theport base 258 ofFIG. 22 . Theport base 258 comprises a plurality ofports 260 and is configured to mount, for example, at a side of a terminal as shown inFIG. 1A . Theports 260 may be configured as flexible ports, and may be configured to receive a flexible connector accommodating a pushable connector therethrough, and also configured to receive the flexible connector coupled to a terminating connector as disclosed in various embodiments herein. - This disclosure is not limited to the particular systems, devices and methods described, as these may vary. The terminology used in the description is for the purpose of describing the particular versions or embodiments only, and is not intended to limit the scope.
- In the above detailed description, reference is made to the accompanying drawings, which form a part hereof. In the drawings, similar symbols typically identify similar components, unless context dictates otherwise. The illustrative embodiments described in the detailed description, drawings, and claims are not meant to be limiting. Other embodiments may be used, and other changes may be made, without departing from the spirit or scope of the subject matter presented herein. It will be readily understood that the aspects of the present disclosure, as generally described herein, and illustrated in the Figures, can be arranged, substituted, combined, separated, and designed in a wide variety of different configurations, all of which are explicitly contemplated herein.
- The present disclosure is not to be limited in terms of the particular embodiments described in this application, which are intended as illustrations of various aspects. Many modifications and variations can be made without departing from its spirit and scope, as will be apparent to those skilled in the art. Functionally equivalent methods and apparatuses within the scope of the disclosure, in addition to those enumerated herein, will be apparent to those skilled in the art from the foregoing descriptions. Such modifications and variations are intended to fall within the scope of the appended claims. The present disclosure is to be limited only by the terms of the appended claims, along with the full scope of equivalents to which such claims are entitled. It is to be understood that this disclosure is not limited to particular methods, reagents, compounds, compositions or biological systems, which can, of course, vary. It is also to be understood that the terminology used herein is for the purpose of describing particular embodiments only, and is not intended to be limiting.
- As used in this document, the singular forms “a,” “an,” and “the” include plural references unless the context clearly dictates otherwise. Unless defined otherwise, all technical and scientific terms used herein have the same meanings as commonly understood by one of ordinary skill in the art. Nothing in this disclosure is to be construed as an admission that the embodiments described in this disclosure are not entitled to antedate such disclosure by virtue of prior invention. As used in this document, the term “comprising” means “including, but not limited to.”
- While various compositions, methods, and devices are described in terms of “comprising” various components or steps (interpreted as meaning “including, but not limited to”), the compositions, methods, and devices can also “consist essentially of” or “consist of” the various components and steps, and such terminology should be interpreted as defining essentially closed-member groups.
- With respect to the use of substantially any plural and/or singular terms herein, those having skill in the art can translate from the plural to the singular and/or from the singular to the plural as is appropriate to the context and/or application. The various singular/plural permutations may be expressly set forth herein for sake of clarity.
- It will be understood by those within the art that, in general, terms used herein, and especially in the appended claims (e.g., bodies of the appended claims) are generally intended as “open” terms (e.g., the term “including” should be interpreted as “including but not limited to,” the term “having” should be interpreted as “having at least,” the term “includes” should be interpreted as “includes but is not limited to,” etc.). It will be further understood by those within the art that if a specific number of an introduced claim recitation is intended, such an intent will be explicitly recited in the claim, and in the absence of such recitation no such intent is present. For example, as an aid to understanding, the following appended claims may contain usage of the introductory phrases “at least one” and “one or more” to introduce claim recitations. However, the use of such phrases should not be construed to imply that the introduction of a claim recitation by the indefinite articles “a” or “an” limits any particular claim containing such introduced claim recitation to embodiments containing only one such recitation, even when the same claim includes the introductory phrases “one or more” or “at least one” and indefinite articles such as “a” or “an” (e.g., “a” and/or “an” should be interpreted to mean “at least one” or “one or more”); the same holds true for the use of definite articles used to introduce claim recitations. In addition, even if a specific number of an introduced claim recitation is explicitly recited, those skilled in the art will recognize that such recitation should be interpreted to mean at least the recited number (e.g., the bare recitation of “two recitations,” without other modifiers, means at least two recitations, or two or more recitations). Furthermore, in those instances where a convention analogous to “at least one of A, B, and C, etc.” is used, in general such a construction is intended in the sense one having skill in the art would understand the convention (e.g., “a system having at least one of A, B, and C” would include but not be limited to systems that have A alone, B alone, C alone, A and B together, A and C together, B and C together, and/or A, B, and C together, etc.). In those instances where a convention analogous to “at least one of A, B, or C, etc.” is used, in general such a construction is intended in the sense one having skill in the art would understand the convention (e.g., “a system having at least one of A, B, or C” would include but not be limited to systems that have A alone, B alone, C alone, A and B together, A and C together, B and C together, and/or A, B, and C together, etc.). It will be further understood by those within the art that virtually any disjunctive word and/or phrase presenting two or more alternative terms, whether in the description, claims, or drawings, should be understood to contemplate the possibilities of including one of the terms, either of the terms, or both terms. For example, the phrase “A or B” will be understood to include the possibilities of “A” or “B” or “A and B.”
- In addition, where features or aspects of the disclosure are described in terms of Markush groups, those skilled in the art will recognize that the disclosure is also thereby described in terms of any individual member or subgroup of members of the Markush group.
- As will be understood by one skilled in the art, for any and all purposes, such as in terms of providing a written description, all ranges disclosed herein also encompass any and all possible subranges and combinations of subranges thereof. Any listed range can be easily recognized as sufficiently describing and enabling the same range being broken down into at least equal halves, thirds, quarters, fifths, tenths, etc. As a non-limiting example, each range discussed herein can be readily broken down into a lower third, middle third and upper third, etc. As will also be understood by one skilled in the art all language such as “up to,” “at least,” and the like include the number recited and refer to ranges which can be subsequently broken down into subranges as discussed above. Finally, as will be understood by one skilled in the art, a range includes each individual member. Thus, for example, a group having 1-3 cells refers to groups having 1, 2, or 3 cells. Similarly, a group having 1-5 cells refers to groups having 1, 2, 3, 4, or 5 cells, and so forth.
- Various of the above-disclosed and other features and functions, or alternatives thereof, may be combined into many other different systems or applications. Various presently unforeseen or unanticipated alternatives, modifications, variations or improvements therein may be subsequently made by those skilled in the art, each of which is also intended to be encompassed by the disclosed embodiments.
Claims (20)
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US11852875B2 (en) | 2023-12-26 |
US11899250B2 (en) | 2024-02-13 |
US20220404560A1 (en) | 2022-12-22 |
US20240126025A1 (en) | 2024-04-18 |
US20200393629A1 (en) | 2020-12-17 |
US11435534B2 (en) | 2022-09-06 |
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